74 lines
1.6 KiB
GLSL
74 lines
1.6 KiB
GLSL
#version 450
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layout(triangles, invocations = 6) in;
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layout(triangle_strip, max_vertices = 3) out;
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struct PointShadowMapSet
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{
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uint entity_id;
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uint shadow_id;
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uint shadow_texture_id;
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uint frame_buffer_id;
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float near_plane;
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float far_plane;
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uint padding[2];
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mat4 light_space_proj;
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mat4 light_space_view[6];
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};
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//Push constants updated for each light
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layout(binding = 0) uniform shadow_per_frame
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{
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vec3 camera_pos;
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uint shadow_idxs;
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};
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layout (std430, binding = 7) readonly buffer point_shadow_map_sets
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{
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PointShadowMapSet point_shadows[];
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};
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layout (location=0) in VS_OUT
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{
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vec2 vsUV;
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flat uint vsMaterialID;
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}vs_in[];
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layout (location=0) out GEOM_OUT
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{
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vec2 vsUV;
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flat uint vsMaterialID;
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vec4 frag_pos;
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flat uint shad_idx;
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flat vec3 light_pos;
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}geom_out;
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void main()
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{
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mat4 view = point_shadows[shadow_idxs].light_space_view[gl_InvocationID];
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mat4 proj = point_shadows[shadow_idxs].light_space_proj;
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mat3 rot_mat = mat3(view);
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vec3 d = vec3(view[3]); // Column-major translation column
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vec3 light_pos = -d * rot_mat;
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for (int i = 0; i < 3; ++i)
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{
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geom_out.light_pos = light_pos;
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geom_out.shad_idx = shadow_idxs;
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geom_out.frag_pos = gl_in[i].gl_Position;
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gl_Layer = gl_InvocationID;
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vec4 clip_space_pos = proj * view * gl_in[i].gl_Position;
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gl_Position = clip_space_pos;
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geom_out.vsMaterialID = vs_in[gl_InvocationID].vsMaterialID;
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geom_out.vsUV = vs_in[gl_InvocationID].vsUV;
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EmitVertex();
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}
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EndPrimitive();
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} |